compound curves in plywood

"COLIN LAMB" wrote


No question the point loads are a big issue. However, it is the same
issue
for those who build epoxy airplanes - because that is what a cedar strip
boat is really, an epoxy boat with a cedar core, instead of foam. All of
the cautions against cedar strip aircraft would apply to foam/epoxy
airplanes - yet there are a number of successful creations flying around.
The main difference is that you have to paint a foam/epoxy job because
foam
is not intrisically beautiful - wood is.

My concern is the fact that there is only one layer, or ply of wood. It
will have way less than 1/4 the strength than a craft with 2 plies of wood,
unless many more plies of fiberglass and epoxy are used. There is also no
resistance to twisting loads, without much more fiberglass. Another layer
of wood at between 90 and 45 degrees would make it much stronger in that
regard, also

The point loads in fiberglass airplanes are carried through strong
bulkheads, bonded very well to the body. I don't think what your describing
has that.

If the use of a single layer of wood is used to be the core, instead of
foam, and the same thickness of fiberglass is applied, as it would be in the
fiberglass and foam plane, there should not be a problem. Is this the
intent?
--
Jim in NC